Question: What is the astronomical filter for Pinwheel Galaxy which has an apparent magnitude of 8.31?
Paraphrase: Which astronomical filter for Pinwheel Galaxy has an apparent magnitude of 8.31?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q14371 p:P1215 ?s . ?s ps:P1215 ?x filter(contains(?x , '8.31')) . ?s pq:P1227 ?value}